The pearling in all of these fish originates from carpintis, but as Rocksor previously explained with hybrids there is no one definitive "type" when it comes to RT's. But I would definitely not call that fish a FH, especially if it was sold as an RT. A lot of these fish sold at Petsmart originate from Seagrest farms, and this particular hybrid mix is labeled RT.
As a side note, the light colored substrate is most likely washing out some of the color.
As a side note, the light colored substrate is most likely washing out some of the color.